It is just 15 months since Labour MP Jo Cox was murdered by a far-right extremist, who has since been jailed.

But despite the warning, Mr Willsman repeated the slur.

He is a member of the NEC and head of the Campaign for Labour Party Democracy, which aims to increase the power of Labour’s activists at the expense of Labour politicians.

After the meeting yesterday, Mr Willsman told The Times that Labour members will “rightly note” any MPs who oppose Jeremy Corbyn’s bid to extend his power over the party.

In the latest victory for Mr Corbyn’s hard-left regime, the NEC decided to add more members drawn from the ranks of activists - and to reduce the level of support needed for future leadership candidates.